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lactols definition

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1. Cyclic hemiacetals formed by intramolecular addition of a hydroxy group to an aldehydic or ketonic carbonyl group. They are thus 1-oxacycloalkan-2-ols or unsaturated analogues. E.g.

2. This term has also been used for hydroxy lactones, but such use is not recommended.

See also:

kinetic electrolyte effect (kinetic ionic-strength effect) definition
Lambda definition
Kjeldahl method definition
Lanthanides definition
Laser-induced fluorescence definition